| Coolidge to Popovo | 6,529.83 mi (10,508.74 km) |
| Coolidge to Provadia | 6,573.16 mi (10,578.48 km) |
| Coolidge to Radnevo | 6,580.91 mi (10,590.95 km) |
| Coolidge to Radomir | 6,477.88 mi (10,425.14 km) |
| Coolidge to Rakitovo | 6,543.81 mi (10,531.25 km) |
| Coolidge to Rakovski | 6,553.13 mi (10,546.25 km) |
| Coolidge to Razgrad | 6,527.40 mi (10,504.83 km) |
| Coolidge to Razlog | 6,530.61 mi (10,510.00 km) |
| Coolidge to Ruse | 6,494.98 mi (10,452.66 km) |
| Coolidge to Samokov | 6,508.11 mi (10,473.79 km) |
| Coolidge to Sandanski | 6,542.42 mi (10,529.01 km) |
| Coolidge to Sevlievo | 6,515.94 mi (10,486.40 km) |
| Coolidge to Shumen | 6,553.43 mi (10,546.72 km) |
| Coolidge to Silistra | 6,514.66 mi (10,484.33 km) |
| Coolidge to Sliven | 6,570.67 mi (10,574.48 km) |
